Dimuon enhancement in nucleus-nucleus ultrarelativistic interactions

被引：15
作者：
Bordalo, P [1 ]
机构：
[1] LIP, P-1000 Lisbon, Portugal
[2] Univ Tecn Lisboa, IST, P-1096 Lisbon, Portugal
来源：
NUCLEAR PHYSICS A | 1999年 / 661卷
关键词：
D O I：
10.1016/S0375-9474(99)00516-3
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The study of muon pairs in the mass region 1.5 < M-mu mu < 2.5 GeV/c(2) in 450 GeV/c p-A, 200 GeV/nucleon S-U and 158 GeV/nucleon Pb-Pb collisions is presented. In p-A interactions. the dimuon signal mass spectra are well described by a superposition of Drell-Yan and charmed meson semi-leptonic decay contributions, in agreement with previous experiments when considering a linear A dependence. In nucleus-nucleus reactions, taking only into account these two physical ingredients, a dimuon enhancement both with increasing A.B and centrality is observed.
引用
收藏
页码：538C / 541C
页数：4
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